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How to check if a file exists from inside a batch file [duplicate]
...ng in batch programs.
IF [NOT] ERRORLEVEL number command
IF [NOT] string1==string2 command
IF [NOT] EXIST filename command
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sqlite database default time value 'now'
...sary.
Using unix epoch saves storage space - 4 bytes integer vs. 24 bytes string when stored as ISO8601 string, see datatypes. If 4 bytes is not enough that can be increased to 6 or 8 bytes.
Saving timestamp on UTC timezone makes it convenient to show a reasonable value on multiple timezones.
SQL...
Search for selection in vim
...sual studio when writing C++. Often, I find myself wanting to search for a string within a function, for example every call to object->public_member.memberfunc() .
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Getting All Variables In Scope
... var x = 0;
console.log(x);
};
You can convert your function to a string:
var s = f + '';
You will get source of function as a string
'function () {\nvar x = 0;\nconsole.log(x);\n}'
Now you can use a parser like esprima to parse function code and find local variable declarations.
var...
How to round the minute of a datetime object
...me. I want to add that if using it in PySpark, to parse the date time as a string rather than a date time object.
– Max
Sep 22 '16 at 1:24
4
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Python loop counter in a for loop [duplicate]
...between the two. I checked both with the following: python -m timeit "s = 'String used for testing'; ''.join(str(i)+str(c) for i, c in enumerate(s))" and python -m timeit "s = 'String used for testing'; ''.join(str(i)+str(s[i]) for i in xrange(len(s)))". Each of them averaged on 8.83 usec per loop o...
Get jQuery version from inspecting the jQuery object
...
You can use either $().jquery; or $.fn.jquery which will return a string containing the version number, e.g. 1.6.2.
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API Versioning for Rails Routes
...uest along with it.
To do this, we call the redirect method and pass it a string with a special-interpolated %{path} parameter. When a request comes in that matches this final match, it will interpolate the path parameter into the location of %{path} inside the string and redirect the user to where...
Calculating how many minutes there are between two times
...tes;
long long_minutes = (long)endTime.Subtract(startTime).TotalMinutes;
string string_minutes = (string)endTime.Subtract(startTime).TotalMinutes;
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Android Left to Right slide animation
...true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.transitiontest.FirstActivity"
android:label="@string/app_name" >
<intent-f...